from PyQt6 import QtWidgets, uic, QtGui
from PyQt6.QtWidgets import QApplication, QWidget, QLineEdit, QTextEdit
import sys

if __name__ == '__main__':
    app = QApplication(sys.argv)

    window = uic.loadUi('test1.ui')
    window.show()
    editTest: QTextEdit = window.textEdit
    editTest.setPlainText('MY FIRST PYTHON GUI')

    sys.exit(app.exec())

